diff --git a/src/js/wombJS.tw b/src/js/wombJS.tw
index 431176616f49b7900ea90802eedf523d1a6e638b..990973f0a3274d52228c15aea9e54fba920ff255 100644
--- a/src/js/wombJS.tw
+++ b/src/js/wombJS.tw
@@ -80,6 +80,7 @@ window.WombImpregnate = function(actor, fCount, fatherID, age) {
 	for (i=0; i<fCount; i++) {
 		tf = {}; //new Object
 		tf.age = age; //initial age
+        tf.motherID = actor.ID; //Initial biological mother ID setup.
 		tf.fatherID = fatherID; //We can store who is father too.
 		tf.volume = 1; //Initial, to create property. Updated with actual data after WombGetVolume call.
 		tf.reserved = 0; //Initial, to create property. Used later to mark if this child is to be kept.